What's the best and/or favorite piece of equipment you've owned? And do you still own it?


My favorite piece(s)  are  (and I still own them) the Martin Logan Ethos lousdpeakers and Soudsmith Paua cartridge.  As far as speakers go, electrostats are my favorite and will replace them with another set of electrostats.  I'm currently eyeing MUR Audio SP1's.  These two pieces make my rig sound great.  
polkalover
My Audiomodded Sony SCD333ES 5 disc SACD player/changer. Still makes lovely music to this day, going on 16 years now!  Absolutely terrific sound, and without any harshness associated with CD's.  Really shines with SACD's.
Pioneer SX-1050. Has more than enough power to drive any of the JBLs I have had. Has all the input and outputs one could need.

As soon as I get my Pioneer TT back the 1050 will go into my 70s disco system.
Infinity Rennasiance 90 spekers.  Got a pair of spare EMIT tweeters just in case.  That case has never come up.  Had a spare pair of speakers "just in case".  That case never came up either so I offed them.  
Tandberg 3012 integrated amp.  Original owner since 1983. Has never let me down. Still strong and loud.  Controls my B&W speakers with ease. Great amp.